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Université de Fribourg

Osteology, fossil record and palaeodiversity of the European lizards

Villa, Andrea ; Tschopp, Emanuel ; Georgalis, Georgios L. ; Delfino, Massimo

In: Amphibia-Reptilia, 2017, vol. 38, no. 1, p. 79–88

he capability of palaeontologists to identify fossil remains of a particular group of vertebrates strongly depends on the knowledge they have of its comparative osteology and on the actual presence of diagnostic differences among the considered taxa. This could have a relevant influence on the study of palaeodiversity, since a low recognisability causes a loss of data when trying to...

Université de Fribourg

New material of Laophis crotaloides, an enigmatic giant snake from Greece, with an overview of the largest fossil European vipers

Georgalis, Georgios L. ; Szyndlar, Zbigniew ; Kear, Benjamin P. ; Delfino, Massimo

In: Swiss Journal of Geosciences, 2016, vol. 109, no. 1, p. 103–116

Laophis crotaloides was described by Richard Owen as a new and very large fossil viperid snake species from Greece. The type material is apparently lost and the taxon was mostly neglected for more than a century. We here describe a new partial viperid vertebra, collected from the same locality and of equivalent size to the type material. This vertebra indicates that at least one of the three...

Université de Fribourg

First description of a fossil chamaeleonid from Greece and its relevance for the European biogeographic history of the group

Georgalis, Georgios L. ; Villa, Andrea ; Delfino, Massimo

In: The Science of Nature, 2016, vol. 103, no. 1–2, p. 1–12

The fossil record of Chamaeleonidae is very scarce and any new specimen is therefore considered important for our understanding of the evolutionary and biogeographic history of the group. New specimens from the early Miocene of Aliveri (Evia Island), Greece constitute the only fossils of these lizards from southeastern Europe. Skull roofing material is tentatively attributed to the Czech species...